84 chevy aftermarket a/c wiring diagram help please!

[pearldiver]

Hi, Hope someone can assist me. Puleeze.... I have a 1984 Chevy C30 camper. I use this as my work truck so my handicapped son can come with me to work. (I resurface concrete) Anyway, I am a mom, and I am also a boat mechanic from the past, so I beleive I could hook up these wires with no problem, even though there are no a/c units in a boat! Here is my problem. The wires to the knobs for air, and cooler knob came off the back. Here is what they are. There is no name of the unit, or aftermarket name on anything, so I am clueless. There are two knobs. One says air 1-2-3-, and it has 5 prongs on the back. There is the cooler knob and it has 2 prongs on the back along with a thermostat type wire like a solid type wire if you know what I mean. There is one blue wire connecting two of the prongs together behind the knob that says Air 1-2-3 . There are two black wires, and one has a connector on it that will attach another wire to it. One orange wire, one Blue wire, One yellow, One red. They are all off. There is a blue wire, the same color as the blue wire to the knobs that is connected to the compressor. THe dash has been cut to accomodate the air vents. They are not original. Any help would be appreciated. Thanks in advance. Gayle